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-rw-r--r--providers/common/kdfs/sshkdf.c292
1 files changed, 0 insertions, 292 deletions
diff --git a/providers/common/kdfs/sshkdf.c b/providers/common/kdfs/sshkdf.c
deleted file mode 100644
index 4701c9cad1..0000000000
--- a/providers/common/kdfs/sshkdf.c
+++ /dev/null
@@ -1,292 +0,0 @@
-/*
- * Copyright 2018-2018 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the OpenSSL license (the "License"). You may not use
- * this file except in compliance with the License. You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
-
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <openssl/evp.h>
-#include <openssl/kdf.h>
-#include "internal/cryptlib.h"
-#include "internal/numbers.h"
-#include "internal/evp_int.h"
-#include "kdf_local.h"
-
-/* See RFC 4253, Section 7.2 */
-
-static void kdf_sshkdf_reset(EVP_KDF_IMPL *impl);
-static int SSHKDF(const EVP_MD *evp_md,
- const unsigned char *key, size_t key_len,
- const unsigned char *xcghash, size_t xcghash_len,
- const unsigned char *session_id, size_t session_id_len,
- char type, unsigned char *okey, size_t okey_len);
-
-struct evp_kdf_impl_st {
- const EVP_MD *md;
- unsigned char *key; /* K */
- size_t key_len;
- unsigned char *xcghash; /* H */
- size_t xcghash_len;
- char type; /* X */
- unsigned char *session_id;
- size_t session_id_len;
-};
-
-static EVP_KDF_IMPL *kdf_sshkdf_new(void)
-{
- EVP_KDF_IMPL *impl;
-
- if ((impl = OPENSSL_zalloc(sizeof(*impl))) == NULL)
- KDFerr(KDF_F_KDF_SSHKDF_NEW, ERR_R_MALLOC_FAILURE);
- return impl;
-}
-
-static void kdf_sshkdf_free(EVP_KDF_IMPL *impl)
-{
- kdf_sshkdf_reset(impl);
- OPENSSL_free(impl);
-}
-
-static void kdf_sshkdf_reset(EVP_KDF_IMPL *impl)
-{
- OPENSSL_clear_free(impl->key, impl->key_len);
- OPENSSL_clear_free(impl->xcghash, impl->xcghash_len);
- OPENSSL_clear_free(impl->session_id, impl->session_id_len);
- memset(impl, 0, sizeof(*impl));
-}
-
-static int kdf_sshkdf_parse_buffer_arg(unsigned char **dst, size_t *dst_len,
- va_list args)
-{
- const unsigned char *p;
- size_t len;
-
- p = va_arg(args, const unsigned char *);
- len = va_arg(args, size_t);
- OPENSSL_clear_free(*dst, *dst_len);
- *dst = OPENSSL_memdup(p, len);
- if (*dst == NULL)
- return 0;
-
- *dst_len = len;
- return 1;
-}
-
-static int kdf_sshkdf_ctrl(EVP_KDF_IMPL *impl, int cmd, va_list args)
-{
- int t;
-
- switch (cmd) {
- case EVP_KDF_CTRL_SET_MD:
- impl->md = va_arg(args, const EVP_MD *);
- if (impl->md == NULL)
- return 0;
-
- return 1;
-
- case EVP_KDF_CTRL_SET_KEY:
- return kdf_sshkdf_parse_buffer_arg(&impl->key,
- &impl->key_len, args);
-
- case EVP_KDF_CTRL_SET_SSHKDF_XCGHASH:
- return kdf_sshkdf_parse_buffer_arg(&impl->xcghash,
- &impl->xcghash_len, args);
-
- case EVP_KDF_CTRL_SET_SSHKDF_SESSION_ID:
- return kdf_sshkdf_parse_buffer_arg(&impl->session_id,
- &impl->session_id_len, args);
-
- case EVP_KDF_CTRL_SET_SSHKDF_TYPE:
- t = va_arg(args, int);
- if (t < 65 || t > 70) {
- KDFerr(KDF_F_KDF_SSHKDF_CTRL, KDF_R_VALUE_ERROR);
- return 0;
- }
-
- impl->type = (char)t;
- return 1;
-
- default:
- return -2;
-
- }
-}
-
-static int kdf_sshkdf_ctrl_str(EVP_KDF_IMPL *impl, const char *type,
- const char *value)
-{
- if (value == NULL) {
- KDFerr(KDF_F_KDF_SSHKDF_CTRL_STR, KDF_R_VALUE_MISSING);
- return 0;
- }
-
- if (strcmp(type, "digest") == 0)
- return kdf_md2ctrl(impl, kdf_sshkdf_ctrl, EVP_KDF_CTRL_SET_MD, value);
- /* alias, for historical reasons */
- if (strcmp(type, "md") == 0)
- return kdf_md2ctrl(impl, kdf_sshkdf_ctrl, EVP_KDF_CTRL_SET_MD, value);
-
- if (strcmp(type, "key") == 0)
- return kdf_str2ctrl(impl, kdf_sshkdf_ctrl,
- EVP_KDF_CTRL_SET_KEY, value);
-
- if (strcmp(type, "hexkey") == 0)
- return kdf_hex2ctrl(impl, kdf_sshkdf_ctrl,
- EVP_KDF_CTRL_SET_KEY, value);
-
- if (strcmp(type, "xcghash") == 0)
- return kdf_str2ctrl(impl, kdf_sshkdf_ctrl,
- EVP_KDF_CTRL_SET_SSHKDF_XCGHASH, value);
-
- if (strcmp(type, "hexxcghash") == 0)
- return kdf_hex2ctrl(impl, kdf_sshkdf_ctrl,
- EVP_KDF_CTRL_SET_SSHKDF_XCGHASH, value);
-
- if (strcmp(type, "session_id") == 0)
- return kdf_str2ctrl(impl, kdf_sshkdf_ctrl,
- EVP_KDF_CTRL_SET_SSHKDF_SESSION_ID, value);
-
- if (strcmp(type, "hexsession_id") == 0)
- return kdf_hex2ctrl(impl, kdf_sshkdf_ctrl,
- EVP_KDF_CTRL_SET_SSHKDF_SESSION_ID, value);
-
- if (strcmp(type, "type") == 0) {
- if (strlen(value) != 1) {
- KDFerr(KDF_F_KDF_SSHKDF_CTRL_STR, KDF_R_VALUE_ERROR);
- return 0;
- }
-
- return call_ctrl(kdf_sshkdf_ctrl, impl, EVP_KDF_CTRL_SET_SSHKDF_TYPE,
- (int)value[0]);
- }
-
- KDFerr(KDF_F_KDF_SSHKDF_CTRL_STR, KDF_R_UNKNOWN_PARAMETER_TYPE);
- return -2;
-}
-
-static size_t kdf_sshkdf_size(EVP_KDF_IMPL *impl)
-{
- return SIZE_MAX;
-}
-
-static int kdf_sshkdf_derive(EVP_KDF_IMPL *impl, unsigned char *key,
- size_t keylen)
-{
- if (impl->md == NULL) {
- KDFerr(KDF_F_KDF_SSHKDF_DERIVE, KDF_R_MISSING_MESSAGE_DIGEST);
- return 0;
- }
- if (impl->key == NULL) {
- KDFerr(KDF_F_KDF_SSHKDF_DERIVE, KDF_R_MISSING_KEY);
- return 0;
- }
- if (impl->xcghash == NULL) {
- KDFerr(KDF_F_KDF_SSHKDF_DERIVE, KDF_R_MISSING_XCGHASH);
- return 0;
- }
- if (impl->session_id == NULL) {
- KDFerr(KDF_F_KDF_SSHKDF_DERIVE, KDF_R_MISSING_SESSION_ID);
- return 0;
- }
- if (impl->type == 0) {
- KDFerr(KDF_F_KDF_SSHKDF_DERIVE, KDF_R_MISSING_TYPE);
- return 0;
- }
- return SSHKDF(impl->md, impl->key, impl->key_len,
- impl->xcghash, impl->xcghash_len,
- impl->session_id, impl->session_id_len,
- impl->type, key, keylen);
-}
-
-const EVP_KDF sshkdf_kdf_meth = {
- EVP_KDF_SSHKDF,
- kdf_sshkdf_new,
- kdf_sshkdf_free,
- kdf_sshkdf_reset,
- kdf_sshkdf_ctrl,
- kdf_sshkdf_ctrl_str,
- kdf_sshkdf_size,
- kdf_sshkdf_derive,
-};
-
-static int SSHKDF(const EVP_MD *evp_md,
- const unsigned char *key, size_t key_len,
- const unsigned char *xcghash, size_t xcghash_len,
- const unsigned char *session_id, size_t session_id_len,
- char type, unsigned char *okey, size_t okey_len)
-{
- EVP_MD_CTX *md = NULL;
- unsigned char digest[EVP_MAX_MD_SIZE];
- unsigned int dsize = 0;
- size_t cursize = 0;
- int ret = 0;
-
- md = EVP_MD_CTX_new();
- if (md == NULL)
- return 0;
-
- if (!EVP_DigestInit_ex(md, evp_md, NULL))
- goto out;
-
- if (!EVP_DigestUpdate(md, key, key_len))
- goto out;
-
- if (!EVP_DigestUpdate(md, xcghash, xcghash_len))
- goto out;
-
- if (!EVP_DigestUpdate(md, &type, 1))
- goto out;
-
- if (!EVP_DigestUpdate(md, session_id, session_id_len))
- goto out;
-
- if (!EVP_DigestFinal_ex(md, digest, &dsize))
- goto out;
-
- if (okey_len < dsize) {
- memcpy(okey, digest, okey_len);
- ret = 1;
- goto out;
- }
-
- memcpy(okey, digest, dsize);
-
- for (cursize = dsize; cursize < okey_len; cursize += dsize) {
-
- if (!EVP_DigestInit_ex(md, evp_md, NULL))
- goto out;
-
- if (!EVP_DigestUpdate(md, key, key_len))
- goto out;
-
- if (!EVP_DigestUpdate(md, xcghash, xcghash_len))
- goto out;
-
- if (!EVP_DigestUpdate(md, okey, cursize))
- goto out;
-
- if (!EVP_DigestFinal_ex(md, digest, &dsize))
- goto out;
-
- if (okey_len < cursize + dsize) {
- memcpy(okey + cursize, digest, okey_len - cursize);
- ret = 1;
- goto out;
- }
-
- memcpy(okey + cursize, digest, dsize);
- }
-
- ret = 1;
-
-out:
- EVP_MD_CTX_free(md);
- OPENSSL_cleanse(digest, EVP_MAX_MD_SIZE);
- return ret;
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-09 19:21:15 +0000